Soldering compound.



EUGENE M. TOTTEN, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-HALF TO ARTHUR M. WIIALEY, OF SAME PLACE.

SOLDERlNG COMPOUND.

SIPZECIFIUATJION forming part Of Letters Patent N0. 667,999, dated February 12, 1901. Application filed May 23, 1900. Serial No. 17,748. (No specimens.)

To ctZZ whom it may concern: eight per cent.; zinc, forty per cent., and a Be it known that I, EUGENE M. TOTTEN, of hydrocarbon two per cent. Buffalo, in the county of Erie and State of In the manufacture ofthesolderaluminium NewYork,haveinvented certain new and useand tin are first melted, then the zinc is 5 ful Improvements in Soldering Compounds; added, and after the reduction of the metals and I do hereby declare the following to be a while still in a molten state and without adfull, clear, and exact description of the inditional heating there is added two per cent. vention, such as will enable others skilled in hydrocarbon, which is mixed with the other the art to which it appertains to make and ingredients into a homogeneous mass. This to use the same. latter ingredient may be fat, wax, paraffin,

This invention contemplates the producor any other species of hydrocarbon, the intion of a new and highly efficient composition vention not being limited in this respect. It of matter for soldering aluminium. has been demonstrated that the addition of Heretofore it has been generally necessary the hydrocarbon to the alloy by increasing 15 in soldering aluminium parts to first file or the amou ntof carbon therein reduces and rescrape the parts, then place a flux on the moves the oxids,which would otherwise form scraped surface, and finally apply a solderon the melted metal, and in consequence the ing compound with the aid of a solderingcompound when cool is white and free from tool. This has been a source of no little anoxids when solid. It is the carbon alone which 20 noyance, causing an expenditure oftime and effects the reduction of the metallic oxids labor. The soldering of aluminium parts has formed on the surface of the aluminium parts also been efiected by subjecting both the to be soldered, and the scraping of such parts metal and solder to an extreme degree of is rendered unnecessary because of the nonheat and then treating the aluminium as in presence of oxids in the soldering compound 25 welding or brazing processes. Practice has made as hereinioefore specified.

demonstrated that because of the high heat In the use of my soldering compound no conductivity of aluminium the heat is rapmechanical device or treatment is necessary idly drawn away from the molten solder, preto prepare the aluminium or the solder, the venting it from having sufficiently free flow. soldering of aluminium parts being accom- 0 The object of this invention is to produce plished in the same way as in ordinary tin a soldering compound capable of ready and or other metal soldering by means of a sol- 8o immediate use, the agencies necessary for efdering copper or bit, the solder compound fecting a thorough union of parts being conbeing in solidified stick form. No flux sepstitnent elements of the article as made and arate from that contained in the commercial 35 sold in its commercial form. The filing or form of the compound is required in the apscraping of the parts is avoided and the emplication of the solder. Practice has demonploymentof a flux separate from the soldering strated that aluminium parts treated with compound is rendered unnecessary. this compound have greater tensile strength It is well known in the art that the scrapat their union than at any other point and 40 ing of the aluminium surfaces is for the purthat the integrity of the jointis not impaired pose of partially removing the surface oxids by time and exposure. to permit the soldering compound to adhere, It will be understood that the proportion and also that it is the presence of these oxids hereinbefore specified may be varied withthat renders it difficult if not impossible to out departing from my invention. In some 4.5 secure a firm joint or union between soldered instances, as in soldering jewelry, it might parts. be desirable to have a softer solder. This 5 The compound is composed of the followmaybe effected by lessening the relative proing ingredients in the proportion specified: portion of aluminium. aluminium, twenty per cent; tin, thirty- I claim as my invention As an article of manufacture, at soldering specification in the presence of two subscrib-, compound, consisting, in its entirety, of aluing Witnesses. minium, tin, Zinc, and a hydrocarbon, in 9 about the proportions specified, all thor-l EUGENE 1OTTEN 5 oughly mixed together While melted, thereby l WVitnesses:

forminga homogeneous mass. J. NOTA MCGILL, In testimony whereof I have signed this F. S. MAGUIRE. 

